Double-walled vessel.



G. P. ALTENBERG & F." BOEHM.

V DOUBLE-WALLED VESSEL. APPLICATION FILED 11.30 1908.

L l 9 1 2 Va 3 M d e t n Du t a P UNITED STATES PATENT OFFICE.

GEORGE P. ALTENBERG AND FRANZ BOEHM, OF CINCINNATI, OHIO; SAID BOEHM'ASSIG'NOR T0 SAID ALTENBERG DOUBLE-WALLED VESSEL.

Specification of Letters Merit.

Patented Ma 2, 1911.

Application filed April 30, 1908. Serial No. 430,166.

To all whom it may concern:

Be it known that we, Gnonon P. ALTER- nnnc and FRANZ Bonner,respectively a citizen of the United States of America and a subject ofthe Emperor of Germany, residing at Cincinnati, in the county ofHamilton and State of Ohio, have jointly-invented certain new and usefulImprovements in .Double-l-Valled Vessels, (Case A,) of which thefollowing is a specification.

Our invention relates to double walled vessels and has for its objectthe providing of new and improved meansfor separating and supporting themembers of the vessel from each other, and the invention will be readilyunderstood from the following description and claims, and from thedrawing, in which latter:

Figure 1 is a central vertical section of our improved device taken on aline corresponding to the line m-rc of Fig. 2. Fig. 2 is a horizontalsection thereof taken on a line corresponding to theline ;1 of Fig. 1.Fig. 3 is a central vertical section of our improved device, showing alarger vessel than that shown in Fig. 1 and also showing a plurality ofrows of separators in the space betweenits members. Fig. 4 is anenlarged detail in section on a line corresponding to the line e-z ofFig. 5; and, Fig. 5 is a detail in front elevation showing the coiledseparator received about its stud and partly broken away.

1 represents the inner member and 2 the outer member of the vessel,which may respectively be-provided with necks 3 l. The

members are preferably joined at the mouth 5 of the vessel, preferablyby fusing. The vessel is preferably formed of glass. A space 6 is formedbetween the members of the vessel, the space surrounding the innermember thereof. This space is-a heat-insulatin space, and the air in itis preferably with rawn or practically exhausted for forming a vacuum.This air may bewith drawn through a nipple 7 which is afterward sealed.The avall of the space may also be provided with suitable silvcringsolution. v

8 8 are coiled sc 'iarators located in the space 6 between the members 12 and are provided for the purpose of supporting the members of thevessel from each other to resist fracture of the vessel. These coiledseparators are preferably located in a row about the lower end of theinner member.

In Fig. 3 We have shown these coiled sepa ratorsarranged in two rows,and when so arranged the separators of the respective rows may be indifferent vertical planes.

Studs 9 9 are secured to the wall, of said space, preferably to theinner member of the vessel, these studs being other than the lass ofsaid members in order that the uni orm thickness and smoothness of saidwall may not .be disturbed. They are preferably fused to said wall. Thecoiled separators are received about said studs. They form cushionsbetween said members. These coiled separators are shown with their endspresented toward the respective members of said vessel, with one of theends of said coils received about said studs, the other ends of saidrespective coils being shown embedded in or received by the oppositemember of said vessel, as shown at 10. In this manner the respectivecoiled separators are securely positioned. The embedding of said coiledseparators into the member is ac complished by locally heating saidmember and forming the glass about the-strand of said coil while inplastic state. The coilseparator is preferably made of a material aroundwhich glass can be formed or fused, and we have found copperaserviceable material for the purpose although platinum or othermaterial having'substantially similar properties may be employed.

The several coils of the-coiled separator are themselves separated bythe heat-insulating space between the members of the vessel, so that anytransference of heat between the members of the vessel-must take placelengthwise of the stretches of the coils,

thereby reducing to the minimum the crossloo 1. A double walled glassvessel comprisin g in combination an inner member and an. outer memberconnected at the mouth of said, vessel and having ,heat-insulatin spacethcrebctween, a stud on the wall 0 said space, and a separator for saidmcmhere in said space betweensaid members receiyled about but normallyspaced from said stu 2. A double walled vessel comprising in combinationan inner member and an outer member connected at the mouth of saidvessel for reventing rclativemovement between said members at said mouthand havin a rarefied space therebetween, and a coiled separator for saidmembers in said rarefied space between said members embedded in a wallof said space at "a distance from said mouth.

3-. A double walled vessel comprising in combination an inner member andan outer member connected at the mouth of said vessel and having aheat-insulating space therebetween, studs on the wall of said space, andcoiled separators for said members in said space between said membersrespectively received about said studs at one of the ends of saidrespective coiled separators, the other of the ends of said respectivecoiled separators embedded in the wall of said space on osite saidrespective studs.

4, A ouble walled vessel: comprising in combination an inner member andan outer member having hermetic connection at the month of said vesselfor preventing relative movement between said members at said mouth andhaving a heat-insulating space therebetween, and coiled separators forsaid members in said space between said members whose respective endsarepresented to the respective walls of said space, the coils of saidrespective coiled separators being normally spaced apart and havingheat-insulating space between them, substantially as described.

5. .A double walled glass vessel comprising in combination an innermember and an outer member having hermetic connection at the mouth ofsaid vessel for pre'ventingrelw tive movement between said members atsaid mouth and having a heat-insulating space'therebetween, and a coiledmetal enshionmg separator 1n said space between said members, the coilsof said coiled separator being normally spaced apart and havingheat-insulating space between them.

6. In combination, a double walled vessel of the character describedcomprising an inner member and an outer member having hermeticconnection at the mouth of said vessel and having scaled heat-insulatingspace thercbctwecn, and coiled cqshioning means between said members insaid space, the coils whereof are normally spaced apart aiid haveheat-insl-llating space between them, the wall of said space beingprovided with positionilre means for positioning said' coiled cushioningmeans.

7. A double walled vessel col'nprismg in combination an inner member andan outer member having hermetic connection at the mouth of said vesselfor preventing relative movement between said members at said mouth andhaving a heat-insulating space therebetween, and coiled separators forsaid members in said space between said members in a plurality ofhorizontal rows, the coiled separators of the respective rows be ing indifferent vertical planes, the coils of said respective coiledseparators beingnormally spaced apartand having heat-insulating spacebetween them.

8. A double walled glass vessel comprising in combination an innermember and an outer member connecting at th' mouth of said vessel andhaving heat-insulating space therebetween, studs secured to said innermember in said space, spiral separators for said members in said spacebetween said members having their ends presented toward said members,said spiral separators at their inner ends received about said studs andat their outer ends embedded in' said outer member in said space,substantially as described.

9. 'A double walled vessel comprising in combination an inner member andan outer member having hermetic connection at the mouth of said vesseland having a heat-insulating space therebetween and so constructed as to'PlGVQl'lb relative movement between said members at said mouth, a studon the face of one of said members in said space, and a. coiled cushionbetween said members in said hcat-insulating space re- .ceived aboutsaid stud, the coils of said coiled cushion being normally spaced apartand having heat-insulatingspace between them.

10. In a double walled vessel, the combination with the inner and outermembers of said vessel having hermetic connection at its mouth forpreventing relative movement between said members and having rarefiedheat-insulating space between said members, a series of coiled elasticseparating members in said rarefied heat-insulating space between saidmembers of said vessel, and studs secured to the inner face of saidvessel within said rarefied heat-insulating space encompassed by saidcoiled separating memb rs, said studs being; shorter than the distance.between the adjacent walls of said space, and the coils of saidrespective coiled separating IHtll'lbClS being normally spaced apart.and having heat-insulating space between them \vhcrebv transference ofheat between said membersthrough said respective coiled separatingmembers must take place lengthwise of the coilsof said respective coileds parating mel'nbers, substantially as described.

.11. in combination, a double walled vessel of the character describedcomprising an inner member and an outer member connected at the month ofsaid vessel and having hermetically sealed heat-insulating spacetherebetween, a coiled separating means in saids ace between saidmembers formin the soie connecting means between the sai members exceptthe connection therebetween -5 at said mouth and positioning means insaid space for "said coiled separating means, the coils of said coiledseparating means being normally spaced apart and having heat-insulatingspace between them, substantially 10 as described. g

" 12. In combination, a double walledvesgeel of the character describedcomprising an winner member and an outer member having ,1.teat-insulating space between them, and a coiled separator in saidheat-insulatin space havin its ends presented toward sai mem bers, t ewall of said space being provided our names hereto in the subscrlbmgwitnesses.

with positioning means for ositioning said coiled separator between saidmembers, said positioning means bein shorter than the 20 distancebetween the ad acent walls of said space, the respective coils of saidcoiled separator being normally spaced apart and having heat-insulatin sace between them, substantially as descri ed In testimony whereof, wehave subscribed presence of two GEORGE PrALTENBERG. FRANZ BOEHM.

\Vitnesses:

EARLE R. PAssEL, FLORENCE QUINN.

